Apple iOS 9 to give four extra hours of iPhone battery life
by Samuel Gibbs from Technology | The Guardian on (#APT4)
New 'low power' mode makes iPhones last longer as Apple focuses on speed, reliability and a smarter Siri with new update
The next update to Apple's iOS iPhone and iPad operating system was unveiled on Monday and introduced a new intelligent search assistant, greater speed and security.
Related: El Capitan: Apple unveils next version of OS X software
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